32X11.50s on 15X7s or 15X8s

[PAXJ]

I am going to be getting Swamper SSRs in 32X11.50 and was wondering if I should run 15X7s or 15X8s. Interco recommends 8s, but will I run into problems with 7s. Will they stay on the rims ok? Thoughts are appreciated.

[Jeffro600]

Either or will work...i think youd be a little happier with the 8's if you ever wanted to go with 12.50's